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Taxonomy
Family:
HYRIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Palaeoheterodonta (Subclass)
> Unionoida (Order)
> Hyrioidea (Superfamily)
> Hyriidae (Family)
> Echyridella (Genus)
> aucklandica (Species)
Synonymised Names:
=Cucumerunio websteri (Simpson, 1902)
=Cucumerunio websteri delli McMichael & Hiscock, 1958
=Diplodon (Hyridella) menziesi lucasi Suter, 1905
=Diplodon menziesii lucasi Suter, 1905
=Diplodon websteri Simpson, 1902
=Echyridella lucasi (Suter, 1905)
=Hyridella aucklandica (Gray, 1843)
=Unio aucklandicus Gray, 1843
Images: Echyridella aucklandica (Gray, 1843)
Henderson, West Auckland, NZ. 80mm. © rights reserved
(websteri form) - From south of Auckland. 62mm. © rights reserved
(delli form) - From a stream north of Auckland, NZ. 66mm. © rights reserved
Taxonomy
Family:
HYRIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Palaeoheterodonta (Subclass)
> Unionoida (Order)
> Hyrioidea (Superfamily)
> Hyriidae (Family)
> Echyridella (Genus)
> aucklandica (Species)
Synonymised Names:
=Cucumerunio websteri (Simpson, 1902)
=Cucumerunio websteri delli McMichael & Hiscock, 1958
=Diplodon (Hyridella) menziesi lucasi Suter, 1905
=Diplodon menziesii lucasi Suter, 1905
=Diplodon websteri Simpson, 1902
=Echyridella lucasi (Suter, 1905)
=Hyridella aucklandica (Gray, 1843)
=Unio aucklandicus Gray, 1843
Details: Echyridella aucklandica (Gray, 1843)
Size/Grows to:
Length 107mm, Height 48mm
Distribution:
North Island. From Kaeo in the north, Auckland, Waikato to Wanganui and Lake Wairarapa. South Island, from Lake Manapouri to Lake Hauroko
Type Data:
  • Kaeo River, SE of Whangaroa, NZ (Freshwater), (paratype of Cucumerunio websteri delli McMichael & Hiscock, 1958)
  • Omaha River, NE of Warkworth, NZ (Freshwater), (holotype of Cucumerunio websteri delli McMichael & Hiscock, 1958)
  • Waiuku, Manukau Harbour, WSW of Pukekohe, NZ (Freshwater), (holotype of Cucumerunio websteri Simpson, 1902)
  • Lake Manapouri, Fiordland, NZ (Freshwater), (lectotype of Diplodon menziesi lucasi Suter, 1905)
Notes:
Freshwater Mussel, Freshwater, Native - Endemic
Distribution Map
 
References and Publications
  • Marshall, B.A., Fenwick, M.C., Ritchie, P.A. 2014 New Zealand Recent Hyriidae (Mollusca: Bivalvia: Unionida), Molluscan Research, 34(3) (p.193)
  • Fenwick, M.C., Marshall, B.A. 2006 A new species of Echyridella from New Zealand, and recognition of Echyridella lucasi (Suter, 1905) (Mollusca: Bivalvia: Hyriidae), Molluscan Research, 26(2) (p.73)
  • Crosby, D.D. Jan/1983 Lake Waahi - Cucumerunio websteri websteri (Simpson, 1902), Poirieria, 12(1) (p.12)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.385)
  • Gray, J.E. 1843 Catalogue of the species of Mollusca and their shells, which have hitherto been recorded as found at New Zealand, with the description of some lately discovered species, Travels in New Zealand; with contributions to the geography, geology, botany, and natural history of that country, 2 (p.257) Original Description

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil